Apparatus for bluing metal sheets.



H. E. SHELDON.

APPARATUS FOR BLUING METAL SHEETS.

APPLICATION FILED'DEG. 6, 1904.

Patented Aug. 31, 1909.

3 SHEETS-SHEET 1.

IN V E N TO R JLE-Sheidon ZLAATTO'HNEYQ H. E. SHELDON.

APPARATUS FOR BLUING METAL SHEETS.

APPLIOATION FILED 1330.6, 1904.

932,587, Patented Aug. 31, 1909.

3 SHEBTS-SHBET 2. maua- 6 a mi INVENTOR, HE.5keZZon ATTORNEYS mmwiwv a. GRAHAM can PHOIO-LITHOGRAPHERS, WASHINGTON, n c.

H. B. SHELDON. APPARATUS FOR BLUING METAL SHEETS.

APPLIOATIQK FILED DBO. 6, 1904. 932,587, Patented Aug. 31, 1909.

3 SHEETS-SHEET 3.

=lml I? w wig E15 E52 il vjgl'ggn f 4 V 2%? m 76 J4 ATTORNEYS UNITED strATEs HAR Y E.- sHELnon, or rrrrssuae, PENNSYLVANIA.

Specification of Letters Patent.

' APPARATUS FOR BLUING METAL SHEETS.

Application filed December 6, 1904. Serial No. 235,761.

To all whom it may concern: 1

Be it known that LHARRY E. SHELDO a citizen of the United States, residing at Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented or discovered new and useful Improvementsin Apparatus for Bluing Metal Sheets, of which the following is a specification. x 1 r My invention relates to apparatus for bluingxmetal sheets, and its object is, generally stated, to give to metal sheets a dark, smooth, glossy finish.

Referring to the drawings, Figure l is an end view of my invention; 7 Fig. 2, a vertical cross-section thereof; ,Fig. 3., a combination view, the upper part being in longitudinal vertical section and the lower part in front elevation; Fig. 4, a detail sectional view showing one way of mounting the auxiliary rollers; Fig. 5, view similar to Fig.2, but showing a modification thereof.

Referring to Figs. 1 to 4, I provide suitable standards 1 in which I mount the two horizontal rolls 2 and 3, the upper one being adjustable vertically toward or away from the lower by screws 4. The rolls 2 and 3 are provided with suitable means for heating them red hot. The means employed may be variously devised and the precise means is by no means important, provided it be eflicient' for the purpose. I have illustrated the roll 3 on Fig. 3 with one form of heating means. This roll is hollow and has hollow trunnions or necks. Through one trunnion I extend an air tube 5 which incloses agas tube 6, the two tubes constituting a burner. In front of the burner I arrange, a cone 6 with its apex toward the burner. The base of the cone is supported on posts 7. 'The roll 2 has a burner of the same or any other.

suitable kind. The cones serve to. spread the flame within the rolls, but other means may be devised or no means at all used for this purpose, if desired and found practicable. Around the lower rolls 2 I arrange a series of auxiliary rolls 8, which I have shown solid. They may be heated or not as found best suited to the work re uired. The rolls 8 are mounted in journal b ocks 9 adjustable in slots arranged radially with respect to the rolls 2 and are held up to the rolls 2 or the metal sheets by means of the s rings 10 seated between the blocks 9 and t e end of the screws 11 adjustable in the standards 1. At one side of the rolls 2 and 3 I provide two tables, 12 and 13, the former arranged to feedthe sheets in the pass between the roll 2 and the leading auxiliary roll Sand the latter to receive the sheets as they pass through the rolls 2 and 3. The sheets pass from table 12 around the 'roll 2 and between the latter and the rolls 8, finally passing between the rolls 2 and upon the table 13. The arrows on Fig. 2 show the course of the sheet.

The sheets after being thoroughly cleaned are fed in the manner described, the large.

I have found that rolls being at a red heat. if the, roll 3 be omitted or raised so as to be out of use, the sheets will have a good motr tled finish suitable foruse, but I have found that I get a more uniform finish or blued surface when the rolls 2 and 3 cooperate on the sheets. I am also able to produce a fair product by the use of the two rolls 2 and 3 alone.

An advantage of the present apparatus is in having feeding and receiving tables both on" the same side of the rolls, as one workman can both feed and carry away the sheets, which he could not do where the two tables are on opposite sides thereof.

In the construction shown in Fig. 5, the sheets are fed in as shown by the arrow at around the roll 2, as in Fig. 2, and then between the roll 3 and a set of rollers 8 arranged about a portion thereof. After the sheets leave the upper roller 8, they pass into the receiving table 13' as indicated by the arrow 6. The guide 14 strips the sheets from the roll 2 just after they have passed between the rolls 2 and 3 and directs them into the pass between the roll 3 and the rollers 8.

The apparatus shown in Fig. 5 provides for a longer pressure and contact of the sheets with the hot rolls and delivers the sheets in a more advantageous osition for manipulation in a continuous mi 1 where the sheets are to be handled by other persons beside the feeder.

I-Iaving described my invention, I claim 1. As a com lete machine, an apparatus for bluing meta sheets consisting of means at the feeding-out terminus of the apparatus for producing a line of pressure upon a portion thereof and causing the said line of pressure to travel over the sheets and means for heating the sheets at the said line so as to become sufficiently hot to blue the said sheets.

2. As .a com lete machine, an apparatus for bluing meta sheets consisting of means at the feeding-out terminus of the apparatus for producing a line of pressure upon a por- Patented Aug. 31, 1909.

tion thereof and causing the said line of pressure to travel over the sheets and means for heating the pressing means, whereby the sheets become sufliciently hot at the said line to blue the saidsheets.

3. As a complete machine, an apparatus for blulng metal sheets consisting of a pair of rolls constitutmg a feeding-out terminus of the machine, and means for heating the same tovsuch a degree that when metal sheets are fed therebetween theywill have a'Russia finish.

- 4. In an apparatus for bluing metal sheets a pair of'she'et working rolls, means for heatmg the rolls and a series of auxiliary ressure rolls arran ed to form a pass arounc one of the pair of sheet-working rolls and to hold the sheets close to the said sheet-working a pair of sheet-working rolls, means for heat aroun ing the rolls internally, and a series of auxiliary ressure rolls arranged to form a pass I one of the pair of sheet-working rolls and to hold the sheets close to the said sheetworking roll, whereby they will absorb suilicient heat from. the said one sheet-working roll to assist the pair of sheet-working rolls to blue the sheets.

6. In an a paratus for bluing metal sheets a hollow r01, a conical deflector in front of the heat producing means for producing heat therein and means for distributing the heat therein.

. 7. In an apparatus for bluing metal sheets, a hollow r0 1, means for heating the same evenly, and means for retaining the sheets in contact with the roll for a substantial portion of its circumference.

Signed at Pittsburg, this second day of December, 1904.

HARRY E. SHELDON Witnesses F. N. BARBER, M. A. BUSHMAN. 

